Logan had a part, but the music scoring, direction, and the acting played a large role in the weaknesses of the film too. The B4 retrieval scene would have been ridiculously better had the entire scene not been completely bleached out. In addition, when Data gives Picard the personal transporter for the first time, the way the scene is played and the musical scoring essentially screams "Data's a dead man." This kills any potential surprise later in the film as rather than simply introducing a new device, the director gives away the twist at the end. Finally, after Shinzon's death, the scene lingers too long on Picard as he slums over his clone rather than attempting to save his ship. This makes Picard look like he just gave up himself and his crew (and mostly Data) rather than seeing him decisively act but get saved by a self-sacrificing Data.
Regarding the clones, I would imagine that Romulus would collect DNA of enemy "combatants" for any number of uses later. Plus, in Data's Day, Picard did have a Romulan spy on board the Enterprise. Who knows, perhaps the sped up aging happens in bursts and Shinzon was created much more recently than would seem the case in the film. . .
Regarding the clones, I would imagine that Romulus would collect DNA of enemy "combatants" for any number of uses later. Plus, in Data's Day, Picard did have a Romulan spy on board the Enterprise. Who knows, perhaps the sped up aging happens in bursts and Shinzon was created much more recently than would seem the case in the film. . .